The young winger, who has hit five goals this term, had to be withdrawn at half-time and could be a doubt for next weekend's visit of leaders Brighton.
"He got a whack on his foot and was in quite a lot of pain at half-time," said Addicks boss Phil Parkinson.
"Scotty's a tough lad and he wouldn't come across with just anything, so we brought him off and we'll see how he is."
Source: PA
